[Bug tree-optimization/82337] [5/6/7/8 Regression] ICE: SSA corruption at tree-ssa-coalesce.c:1010

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82337

--- Comment #15 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Mon Oct  2 18:10:40 2017
New Revision: 253361

URL: https://gcc.gnu.org/viewcvs?rev=253361&root=gcc&view=rev
Log:
[gcc]

2017-10-02  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        Backport from mainline
        2017-09-29  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        PR tree-optimization/82337
        * gimple-ssa-strength-reduction.c (find_phi_def): Don't record a
        phi definition if the PHI result appears in an abnormal PHI.
        (find_basis_for_base_expr): Don't record a basis if the LHS of the
        basis appears in an abnormal PHI.

[gcc]

2017-10-02  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        Backport from mainline
        2017-09-29  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        PR tree-optimization/82337
        * gcc.c-torture/compile/pr82337.c: New file.


Added:
    branches/gcc-5-branch/gcc/testsuite/gcc.c-torture/compile/pr82337.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/gimple-ssa-strength-reduction.c
    branches/gcc-5-branch/gcc/testsuite/ChangeLog